STOCKHOLDERS' EQUITY (DEFICIT) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2023	Nov. 30, 2022
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	$ 1,029	$ 909	$ 1,878	$ 1,659
Cloud services and license support [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	137	113	248	204
Hardware [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	6	5	11	9
Services [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	45	35	78	60
Sales and marketing [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	174	151	309	275
Research and development [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	573	510	1,057	932
General and administrative [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	$ 94	$ 95	$ 175	$ 179